CVE-2026-42893: CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') in Microsoft Microsoft Outlook for iOS
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to perform tampering over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-42893) involves improper neutralization of special elements used in commands (CWE-77) in Microsoft Outlook for iOS, specifically within the M365 Copilot feature. An attacker can exploit this command injection flaw remotely without privileges but requires user interaction. The vulnerability affects version 1.0.0 of the product. Microsoft has published an official fix to address this issue.
Potential Impact
The vulnerability allows an attacker to tamper with the application remotely, potentially altering commands executed by the software. While confidentiality and availability are not impacted, the integrity of the application is compromised. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft and should be applied promptly. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42893 for the patch and update instructions.
CVE-2026-42893: CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') in Microsoft Microsoft Outlook for iOS
Description
Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an unauthorized attacker to perform tampering over a network.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-42893) involves improper neutralization of special elements used in commands (CWE-77) in Microsoft Outlook for iOS, specifically within the M365 Copilot feature. An attacker can exploit this command injection flaw remotely without privileges but requires user interaction. The vulnerability affects version 1.0.0 of the product. Microsoft has published an official fix to address this issue.
Potential Impact
The vulnerability allows an attacker to tamper with the application remotely, potentially altering commands executed by the software. While confidentiality and availability are not impacted, the integrity of the application is compromised. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft and should be applied promptly. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42893 for the patch and update instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T22:35:54.966Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42893","vendor":"Microsoft"}]
Threat ID: 6a036564cbff5d861008cc99
Added to database: 5/12/2026, 5:37:40 PM
Last enriched: 5/12/2026, 6:06:46 PM
Last updated: 5/13/2026, 4:49:47 AM
Views: 7
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